Suppression of noise in optical associative memories by real time thresholding Conference Paper uri icon


  • Associative memories that recognize a pattern based on partial input have numerous applications such as homeland security. Optical implementations of associative memories, for example using computer-generated holograms, have the inherent parallelism as an advantage over software realizations. The nonlinear thresholding operation is a key step in the optical associative memories. A major source error in these memories is the thresholding uncertainties caused by fluctuation, for example in the input illumination or varying degrees of partial obscuration. Here, we show a proof-of-principle demonstration of a new scheme to suppress such errors using real time thresholding and a modified Hopfield associative memory model.

name of conference

  • Fluctuations and Noise in Photonics and Quantum Optics III

published proceedings

  • Fluctuations and Noise in Photonics and Quantum Optics III

author list (cited authors)

  • Deng, Z. J., Qing, D. K., Hemmer, P. R., & Zubairy, M. S.

citation count

  • 0

complete list of authors

  • Deng, ZJ||Qing, DK||Hemmer, PR||Zubairy, MS

editor list (cited editors)

  • Hemmer, P. R., Gea-Banacloche, J. R., Heszler, Sr., P., & Zubairy, M. S.

publication date

  • May 2005